photodelegate.cpp Example File

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 #include "photodelegate.h"

 #include <QtGui>

 PhotoDelegate::PhotoDelegate(QObject *parent)
     : QAbstractItemDelegate(parent)
 {
 }

 PhotoDelegate::~PhotoDelegate()
 {
 }

 void PhotoDelegate::paint(
         QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     QPen oldPen = painter->pen();

     QStyle *style = QApplication::style();

     int margin = style->pixelMetric(QStyle::PM_ButtonMargin);

     QRect rect = option.rect;

     if (option.state & QStyle::State_HasFocus) {
         painter->fillRect(rect, option.palette.highlight());

         painter->setPen(option.palette.color(QPalette::HighlightedText));
     }

     rect.adjust(margin, margin, -margin, -margin);

     QRect decorationRect = rect;
     decorationRect.setRight(decorationRect.left() + option.decorationSize.width());

     QPixmap decoration = qvariant_cast<QPixmap>(index.data(Qt::DecorationRole));
     if (!decoration.isNull())
         style->drawItemPixmap(painter, decorationRect, Qt::AlignCenter, decoration);
     else
         painter->drawRect(decorationRect);

     painter->setPen(oldPen);
 }

 QSize PhotoDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &) const
 {
     int margin = QApplication::style()->pixelMetric(QStyle::PM_ButtonMargin);

     QSize size = option.decorationSize;

     size.rheight() += 2 * margin;
     size.rwidth() += 2 * margin;

     return size;
 }